Armored conduit or conductor.



G. A. LUTZ.

ARMOR-ED O'OIIDUIT 0R CONDUCTOR. APPLIOATIQN'EILBD JULY 22, 1910.

1,095,64, Patented may 5, 1914.

' v a 3mm 0% (1m 66.12

UNITED STATES PA ENT orrron.

GEORGE A. LUT Z, OF PLAINFIELD, NEW JERSEY, AS$IGNOR TO AMERICAN CIRCULAR, LOOM COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

ARMORED CONDUIT 0.331 CONDUCTOR.

Application filed July 22, 1910. Serial N 0. 573,183.

To all who-m it'may concern Be it known that I, GEORGE A. Low, a citizen of the United States, and resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Armored Conduits or Conductors, of which the following is a specification.

The object of my invention is to provide at protecting armor or covering for electric conductors, and for other purposes, and to cause the convolutions of the spirally wound protecting armor or covering to re tain their proper relative positions whether the device be straight or curved.

In carrying out my invention I provide a spiral-1y wound covering or armor, the material of which is provided with longitudinally disposed grooves side by side but facing in opposite directions, the marginal projecting portion of one convolution entering the groove of the adjacent convolution, and within the outwardly disposed spiral groove of the convolutions I wind a wire or the like which is adapted to engage an intermediate wall of one convolution and a marginal edge portion of the adjacent convolution, whereby said convolutions are maintained separated, whereby when the device is bent or curved the o-uterportion of the conv0lutions may separate to some extent, while the inner portions thereof are maintained in a substantially normal position to preventthe convolutions from crowding and enwit inner and outer longitudinal grooves abling the ready curving or bending of the device.

Reference is to be had to the accompanying drawings forming part hereof, wherein,

Figure 1 is a partly sectional side view of an armored conductor embodying my invention; and Fig. 2 is a central section of the armor or'eonduit, the conducto being removed. 1

Informing my improvements I. provide a stri of suitable material 1, such as metal,

1%, 1", thereby providing in the strip an intermediatewall 1, and an inwardly turned marginal portion 1 and an outwardly turned marginal portion 1. In Figs. 1 and Specification of Letters Patent.

Patented May 5, 1914.

portion 1 is at an angle to the adjacent outer flat portion 1 of the winding, the

parts 1, 1 extending at an oblique angle to each other. \Vhen the strip is wound the inturned angular portions 1 will enter the grooved portion 1" while the outer turned portion 1 will enter the grooved portion 1, and the parts will be prevented from be coming separated in the direction of the length of the conductor 2. The arrangement provides an external spirally disposed spacev 4 between the parts 1 and 1 within which I wind 21 wire or the like 5 in a spiral manner, which partially fills said space. The Wire 5 isthus interposed between the parts 1, 1 of the spiral winding and acts as an abutment between said parts 1, 1 to resist contraction or pushing together of the spiral winding, yet permits the device to be bent or curved, as the outer portion of the spiral winding may be separated somewhat while the wire 5 serves to preventthe parts 1 and l on the inner side of the curve from approaching too closely. By having the parts 1, 1 at an angle to the plane .of conductor 2 they may crowd somewhat under winding 5 if necessary on the inner portion of the groove, thereby tending to tighten the binding upon the spiral winding.

Having now described my invention-whatcpnvolution, within sald posed between said angular portions and free to move when pressed by the said an- 5 gular marginal portion during bending Of the device.

Signed at New York city, in the county and a spirally disposed wire of New York and State of New York this V-shapecl groove and inter- ].9th. day of July, A. D. 1910.

GEORGE A. LUTZ. Witnesses T. F BOURNE, MARIE F. l/VAINRIGHT. 

